CN204918380U - Two thorax shaft kilns - Google Patents
Two thorax shaft kilns Download PDFInfo
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- CN204918380U CN204918380U CN201520671765.8U CN201520671765U CN204918380U CN 204918380 U CN204918380 U CN 204918380U CN 201520671765 U CN201520671765 U CN 201520671765U CN 204918380 U CN204918380 U CN 204918380U
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Abstract
The utility model discloses a two thorax shaft kilns, wherein, this two thorax shaft kilns includes: the kiln body, feed mechanism and shedding mechanism 6, wherein, the kiln body is including the first kiln section of thick bamboo 1 and a second kiln section of thick bamboo 2 that vertically set up and be the tube -shape side by side, material loading system configuration is in the top of a first kiln section of thick bamboo 1 and a second kiln section of thick bamboo 2, shedding mechanism 6 sets up in the bottom of a first kiln section of thick bamboo 1 and a second kiln section of thick bamboo 2, the interface channel 8 intercommunication is passed through to the lower part of a first kiln section of thick bamboo 1 and a second kiln section of thick bamboo 2, wherein, the kiln thorax longitudinal section of a first kiln section of thick bamboo 1 and a second kiln section of thick bamboo 2 is middle broad, the narrower shape in upper and lower both ends. The utility model discloses can let raw materials ground motion smooth and easy more in the kiln thorax to making the burning abundant more and even, reducing to give birth to and burn and the burning rate, improve off -the -shelf quality, can also reduce the wearing and tearing of the internal portion of kiln simultaneously, increase of service life reduces investment cost.
Description
Technical field
The utility model relates to a kind of calcining kiln, and especially, relates to a kind of MAERZ lime kiln.
Background technology
MAERZ lime kiln technique functions comes from Europe, and at present, existing a lot of seat MAERZ lime kiln is in operation in the world.Practice shows, MAERZ lime kiln has a lot of advantage, such as equipment is simple, operating maintenance is convenient, Working environment is better, calcination product is superior in quality, the investment of particularly building MAERZ lime kiln is lower, cost performance is very high, therefore there is good development prospect, and, MAERZ lime kiln is highly suitable for oil gas class energy poor, and use in the resourceful situation of coal, thus make full use of coal resources supplement or alternative geseous fuel, improve the quality of burning till nonmetalliferous ore goods, reach save energy simultaneously, particularly save a large amount of high-quality hydrocarbon resources object, significant.
The feed entrance point of MAERZ lime kiln is at top, can move to bottom and pile up after raw material enters kiln thorax from top, but, kiln thorax due to MAERZ lime kiln is rectangular parallelepiped, the movement of raw material in kiln thorax is enough not smooth and easy, can cause the burning of raw material in kiln thorax even not, easily occur raw burn and burning.
To burn uneven problem for existing MAERZ lime kiln Raw, not yet propose effective solution at present.
Utility model content
For the problems referred to above in correlation technique, the utility model proposes a kind of MAERZ lime kiln, raw material can be made to move more swimmingly in kiln thorax, make the burning of raw material in kiln thorax more even, improve the quality of products.
Kiln body, feed mechanism and shedding mechanism 6 is comprised according to MAERZ lime kiln of the present utility model, wherein, kiln body comprises and longitudinally arranges side by side and be the first kiln cylinder 1 and the second kiln cylinder 2 of tubular, feeding system is arranged at the top of the first kiln cylinder 1 and the second kiln cylinder 2, shedding mechanism 6 is arranged at the bottom of the first kiln cylinder 1 and the second kiln cylinder 2, first kiln cylinder 1 is communicated with by connecting passage 8 with the bottom of the second kiln cylinder 2, wherein, the kiln thorax vertical section of the first kiln cylinder 1 and the second kiln cylinder 2 is the narrower shape in wide middle, up and down two ends.
Wherein, the top of connecting passage 8 is built by the prefabricated section arch bridge of arc.Alternatively, prefabricated section arch bridge laminated multi-layer in the vertical.
In addition, the bottom of the first kiln cylinder 1 and the second kiln cylinder 2 is respectively arranged with corresponding shedding mechanism 6, and the shedding mechanism of each kiln cylinder correspondence is multiple discharge mechanism.Alternatively, multiple discharge mechanism is many drawer types shedding mechanism, and the quantity of discharging drawer is 3-4.
Further, multiple discharge mechanism can be connected with hydraulic efficiency system and operate under the drive of hydraulic efficiency system.
Alternatively, the kiln thorax vertical sectional shape of the first kiln cylinder 1 and the second kiln cylinder 2 can be convex polygon.
Alternatively, the kiln thorax shape of cross section of the first kiln cylinder 1 and the second kiln cylinder 2 can be convex polygon.
In addition, the top of the first kiln cylinder 1 and the second kiln cylinder 2 is provided with burner blower 4, and bottom is provided with cooling blower 7, and kiln thorax inside is provided with spray gun 5 and cooling air pipeline.
In addition, the profile of the first kiln cylinder 1 and the second kiln cylinder 2 is cuboid, alternatively, the outer wall of the first kiln cylinder 1 and the second kiln cylinder 2 is enclosed with steel kiln body case 10.
The utility model is by by the profile design of kiln thorax being the narrow shapes in middle wide, upper and lower two ends, raw material can be allowed to move more swimmingly in kiln thorax, thus allow burning more fully with even, reduce raw burn and burning rate, improve the quality of finished product, kiln body inter deterioration can also be reduced simultaneously, increase the service life, reduce cost of investment.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the longitudinal section of the MAERZ lime kiln according to the utility model embodiment;
Fig. 2 is the longitudinal section of the kiln cylinder of MAERZ lime kiln according to the utility model embodiment;
Fig. 3 is the cross-sectional view of the kiln cylinder of MAERZ lime kiln according to the utility model embodiment;
Fig. 4 is the structure iron of connecting passage in the MAERZ lime kiln according to the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 is the longitudinal section of the MAERZ lime kiln according to the utility model specific embodiment.
As shown in Figure 1, MAERZ lime kiln comprises the first kiln cylinder 1, second kiln cylinder 2, level gage 3, burner blower 4, Fuel lance 5, shedding mechanism 6, cooling blower 7, connecting passage 8, refractory lining 9 and kiln body case 10.Wherein, raw material 11 and the product 12 burnt till is also had in kiln thorax.
Wherein, first kiln cylinder 1 and the second kiln cylinder 2 longitudinally arrange side by side and are tubular, the top of the first kiln cylinder 1 and the second kiln cylinder 2 is provided with feeding system (not shown), shedding mechanism 6 is arranged at the bottom of the first kiln cylinder 1 and the second kiln cylinder 2, first kiln cylinder 1 is communicated with by connecting passage 8 with the bottom of the second kiln cylinder 2, wherein, the kiln thorax vertical section of the first kiln cylinder 1 and the second kiln cylinder 2 is wide middle, the shape that upper and lower two ends are narrower, thus conform to the movement tendency of raw material in kiln thorax, make the burning of raw material more even, improve final product quality, the wearing and tearing that kiln body inside occurs can also be avoided, increase the service life.
Fig. 2 shows the kiln thorax vertical sectional shape of the first kiln cylinder 1 according to the MAERZ lime kiln of the utility model one embodiment and the second kiln cylinder 2.Wherein, for the sake of clarity, in Fig. 2 and the integral parts such as not shown burner blower, cooling blower, Fuel lance, connecting passage, shedding mechanism, kiln body case, and basically illustrate kiln cylinder, in fact, the set-up mode of these integral parts can reference drawing 1, and those skilled in the art also can adjust the set-up mode of these integral parts according to the actual requirements.
Wherein, the kiln thorax shape shown in Fig. 2 is 8 limit shapes.But illustrated in fig. 2 is only a specific examples of kiln thorax vertical sectional shape, in fact, the vertical sectional shape of kiln thorax can also be other forms of convex polygon, the quantity on limit is also not limited to 8 illustrated in fig. 2, or the shape of kiln thorax two sides may also be arc.
In addition, in one embodiment, not only the kiln thorax vertical section of the first kiln cylinder 1 and the second kiln cylinder 2 is the narrow shapes in middle wide, upper and lower two ends, the shape of kiln thorax cross section can be design like this equally, such as, in the embodiment shown in fig. 3, the outline of the first kiln cylinder 1 and the second kiln cylinder 2 is rectangle, kiln thorax very cross-sectional shape is convex 6 limit shapes, and the interior angle being positioned at two limits on length direction is 176 °.In other embodiments, above-mentioned angle can change into other numerical value being less than 180 °, or, kiln thorax limit in the longitudinal direction can be arcuation, or the cross section of kiln thorax can also be convex 8 limit shapes or other forms of convex polygon, the intersection on limit and limit can be arc transition equally.
In addition, in existing MAERZ lime kiln, between bottom two kiln cylinders be arranged side by side, connecting passage is had, for being communicated with by two kiln thoraxes.But the top of normally used connecting passage is formed by piling up part, and this by pile up fragment of brick formed channel roof and insecure, along with the increase of duration of service, fragment of brick easily comes off, and even there is the risk of caving in, and affects the normal work of MAERZ lime kiln.
In order to avoid the problems referred to above, the top according to the connecting passage 8 adopted in MAERZ lime kiln of the present utility model is built by the prefabricated section arch bridge of arc.Alternatively, Fig. 1 shows the cross section of the prefabricated section arch bridge of laminated multi-layer in the vertical.Specifically, prefabricated section arch bridge longitudinal direction stacking 3 layers has been shown in Fig. 4.Not pile up due to prefabricated section arch bridge and form, so its stability is better than pile up part, thus effectively overcome the problem that connecting passage top block comes off and top caves in.Different according to the actual requirements, stacking quantity and can changing of prefabricated section arch bridge, also can place by individual layer.
In addition, mainly single-point discharging bottom current MAERZ lime kiln, that is, the shedding mechanism installed below each kiln cylinder performs single-point discharging.And the shedding mechanism 6 set by the first kiln cylinder 1 of MAERZ lime kiln of the present utility model and the bottom of the second kiln cylinder 2 is multiple discharge mechanism.Alternatively, the multiple discharge mechanism that the utility model adopts can be many drawer types shedding mechanism, such as, in a specific embodiment, below each kiln cylinder, the discharging drawer quantity of shedding mechanism 6 is 3-4, in fact, the quantity of discharging drawer can be determined according to the size bottom kiln cylinder, is not limited to the above quantity enumerated.By adopting multiple discharge mechanism, the process of discharging can be improved, contributing to improving integral production efficiency.
In one embodiment, multiple discharge mechanism can be connected with hydraulic efficiency system and operate under the drive of hydraulic efficiency system.In other embodiments, multiple discharge mechanism also can operate under the drive of other power systems.
In addition, the top of the first kiln cylinder 1 and the second kiln cylinder 2 is provided with burner blower 4, and bottom is provided with cooling blower 7, and kiln thorax inside is provided with spray gun 5 and cooling air pipeline.
In addition, the profile of the first kiln cylinder 1 and the second kiln cylinder 2 is cuboid, alternatively, the outer wall of the first kiln cylinder 1 and the second kiln cylinder 2 is enclosed with steel kiln body case.
In actual applications, MAERZ lime kiln can comprise the part compositions such as raw material preparation system, feeding system, kiln body, discharge system, firing system, hydraulic efficiency system, dust-removal system, electrical automation system.Kiln body two kiln thoraxes are divided into preheating zone, calcining zone, cooling zone three part from top to bottom, and material is calcined completely in kiln thorax.
When producing, the high-temperature gas of a kiln thorax generation imports another kiln thorax by connecting passage, discharges after carrying out preheating to another kiln thorax material, and two kiln thorax cycles switch alternately produces, and realizes the maximum utilization of heat energy.Directly utilize kiln body and raw material to realize heat accumulation function, do not need external preheater and heat exchanger apparatus, good energy-conserving effect, hear rate is low.Alternatively, kiln thorax can adopt and flow calcining manners and produce, and namely Flow of Goods and Materials direction is identical with hot gas flow direction, and and flow calcining and meet material calcining curve, product is heated evenly, and calcination process is long, be easy to produce light-burned product, raw burn and burning rate can be reduced further.
Further, the lance combustion of firing system can use the various fuel such as coal dust, heavy oil, coal gas.The impact fallen for preventing raw material and wearing and tearing, can be equipped with protective sleeve above spray gun.Each kiln thorax arranges tens of spray guns according to output.In production process, need that cooling air is blasted to the spray gun of accumulation of heat kiln thorax and prevent spray gun to be oxidized and blocking.
Kiln thorax shell can be steel plate, and inside builds refractory materials by laying bricks or stones.Wherein, the kiln thorax shell of part high-temperature area can adopt heat-resisting steel sheet and plate.Refractory materials (9) can adopt non-alkaline brick masonry at cooling zone and preheating zone, and then adopt basic brick to build by laying bricks or stones at calcining zone, each masonry arranges working lining, thermal insulation layer, guarantees that kiln shell temperature is lower than 120 DEG C.
The utility model relates to a kind of rectangle MAERZ lime kiln processing massive ore, there is rational thermal property, can use solid fuel (such as, coal dust etc.), the pluralities of fuel such as liquid fuel, geseous fuel realizes calcining, such as, can the non-metallic minerals such as calcined limestone, rhombspar, magnesite.
Specifically, for the inner thermal technology's condition of the kiln needed for the non-metallic mineralss such as calcined limestone, rhombspar, magnesite and chemical environment, adopt the refractory materialss such as clayey, High-Alumina, magnesium-aluminium spinel matter as working lining.The mature production technology of these materials, cheap, be convenient to shaft furnace and build and safeguard.Such as, Mg-Al spinel brick built by laying bricks or stones by calcining zone, and passage builds Mg-Al spinel brick and High-Alumina prefabricated section compound masonry by laying bricks or stones, guarantees that kiln body refractory materials (9) is stablized the long lifetime and run.Meanwhile, adopt the world state-of-the-art due to shaft furnace and flow calcining process, than its calcining belt temperature decline of traditional adverse current calcining process 150-200 DEG C, thus extending the work-ing life of refractory lining further.
In sum, by means of the technical solution of the utility model, raw material can be allowed to move more swimmingly in kiln thorax, thus allow burning more fully with even, reduce raw burn and burning rate, improve the quality of finished product, kiln body inter deterioration can also be reduced simultaneously, increase the service life, reduce cost of investment; Further, built the top of connecting passage by prefabricated section arch bridge, the problem that passage caves in can be avoided, improve the stability of MAERZ lime kiln; In addition, by adopting the mode of multiple discharge, can discharge process be improved, contributing to improving overall production efficiency.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a MAERZ lime kiln, it is characterized in that, comprise: kiln body, feed mechanism and shedding mechanism (6), wherein, kiln body comprises and longitudinally arranges side by side and be the first kiln cylinder (1) of tubular and the second kiln cylinder (2), described feeding system is arranged at the top of described first kiln cylinder (1) and described second kiln cylinder (2), described shedding mechanism (6) is arranged at the bottom of described first kiln cylinder (1) and described second kiln cylinder (2), described first kiln cylinder (1) is communicated with by connecting passage (8) with the bottom of described second kiln cylinder (2), wherein, the kiln thorax vertical section of described first kiln cylinder (1) and described second kiln cylinder (2) is wide middle, the shape that upper and lower two ends are narrower.
2. MAERZ lime kiln according to claim 1, is characterized in that, the top of described connecting passage (8) is built by the prefabricated section arch bridge of arc.
3. MAERZ lime kiln according to claim 2, is characterized in that, described prefabricated section arch bridge laminated multi-layer in the vertical.
4. MAERZ lime kiln according to claim 1, it is characterized in that, the bottom of described first kiln cylinder (1) and described second kiln cylinder (2) is respectively arranged with corresponding shedding mechanism (6), and the shedding mechanism of each kiln cylinder correspondence is multiple discharge mechanism.
5. MAERZ lime kiln according to claim 4, is characterized in that, described multiple discharge mechanism is many drawer types shedding mechanism, and the quantity of discharging drawer is 3-4.
6. MAERZ lime kiln according to claim 4, is characterized in that, described multiple discharge mechanism is connected with hydraulic efficiency system and operates under the drive of hydraulic efficiency system.
7. MAERZ lime kiln according to claim 1, is characterized in that, the kiln thorax vertical sectional shape of described first kiln cylinder (1) and described second kiln cylinder (2) is convex polygon.
8. MAERZ lime kiln according to claim 1, is characterized in that, the kiln thorax shape of cross section of described first kiln cylinder (1) and described second kiln cylinder (2) is convex polygon.
9. MAERZ lime kiln according to claim 1, it is characterized in that, the top of described first kiln cylinder (1) and described second kiln cylinder (2) is provided with burner blower (4), bottom is provided with cooling blower (7), and kiln thorax inside is provided with spray gun (5) and cooling air pipeline.
10. MAERZ lime kiln according to claim 1, is characterized in that, the profile of described first kiln cylinder (1) and described second kiln cylinder (2) is cuboid, outer wall is enclosed with steel kiln body case 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520671765.8U CN204918380U (en) | 2015-09-01 | 2015-09-01 | Two thorax shaft kilns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520671765.8U CN204918380U (en) | 2015-09-01 | 2015-09-01 | Two thorax shaft kilns |
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| CN204918380U true CN204918380U (en) | 2015-12-30 |
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| CN201520671765.8U Active CN204918380U (en) | 2015-09-01 | 2015-09-01 | Two thorax shaft kilns |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139352A (en) * | 2020-01-13 | 2020-05-12 | 蒋福军 | Production method of pellet ore |
| CN111763020A (en) * | 2020-08-14 | 2020-10-13 | 中冶京诚工程技术有限公司 | Double-chamber shaft kiln and calcining method |
| CN113357923A (en) * | 2021-06-02 | 2021-09-07 | 南京钢铁股份有限公司 | Production control method of lime double-D kiln in countercurrent heat storage control mode |
-
2015
- 2015-09-01 CN CN201520671765.8U patent/CN204918380U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139352A (en) * | 2020-01-13 | 2020-05-12 | 蒋福军 | Production method of pellet ore |
| CN111763020A (en) * | 2020-08-14 | 2020-10-13 | 中冶京诚工程技术有限公司 | Double-chamber shaft kiln and calcining method |
| CN113357923A (en) * | 2021-06-02 | 2021-09-07 | 南京钢铁股份有限公司 | Production control method of lime double-D kiln in countercurrent heat storage control mode |
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